Contacts of the helix formed by residues 416 - 431 (chain A) in PDB entry 1JS6


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with SER 416 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412A  ARG*     3.3     7.0    -      -       -      +
    415A  GLY*     1.3    71.9    -      -       -      -
    417A  ASP*     1.3    64.7    +      -       -      +
    418A  GLY*     3.4     4.9    +      -       -      -
    419A  LEU*     3.1    33.8    +      -       -      +
    420A  ASN*     3.0    17.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 417 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412A  ARG*     3.0    18.2    +      -       -      +
    416A  SER*     1.3    74.5    -      -       -      +
    418A  GLY*     1.3    57.3    +      -       -      +
    420A  ASN*     3.3     2.2    +      -       -      +
    421A  GLU*     2.8    40.5    +      -       -      +
    442A  GLY      3.8    11.6    -      -       -      +
    443A  GLN*     3.5     7.9    -      -       -      +
    444A  PHE*     2.8    40.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 418 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    416A  SER*     3.1     6.5    +      -       -      -
    417A  ASP*     1.3    79.8    -      -       -      +
    419A  LEU*     1.3    62.0    +      -       -      +
    421A  GLU*     3.3    13.3    +      -       -      +
    422A  ALA*     3.1    23.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 419 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    413A  LEU*     3.3    41.1    -      -       +      +
    414A  LYS      4.1    13.5    -      -       -      +
    415A  GLY*     4.7     1.8    -      -       -      -
    416A  SER*     3.1    25.8    +      -       -      +
    418A  GLY*     1.3    76.8    -      -       -      +
    420A  ASN*     1.3    57.1    +      -       -      +
    422A  ALA*     3.2     8.1    -      -       +      +
    423A  LEU*     3.1    21.0    +      -       -      +
    474A  LEU*     3.4    32.8    -      -       +      +
    475A  LEU*     4.3    15.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 420 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412A  ARG*     3.3    31.6    -      -       -      +
    413A  LEU*     2.6    52.0    +      -       -      +
    416A  SER      3.0    21.4    +      -       -      -
    417A  ASP*     3.8     3.8    -      -       -      +
    419A  LEU*     1.3    75.3    -      -       -      +
    421A  GLU*     1.3    66.3    +      -       -      +
    422A  ALA      3.0     1.6    -      -       -      -
    423A  LEU*     3.2     8.5    +      -       -      +
    424A  LEU*     3.1    19.8    +      -       -      +
    444A  PHE*     3.6    27.1    -      -       +      +
    446A  LEU*     3.9    11.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 421 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    417A  ASP*     2.8    30.2    +      -       -      +
    418A  GLY*     3.7    12.3    -      -       -      +
    420A  ASN*     1.3    72.4    -      -       -      +
    422A  ALA*     1.3    58.6    +      -       -      +
    424A  LEU*     3.5     3.5    +      -       -      +
    425A  GLU*     3.0    41.8    +      -       +      +
    444A  PHE*     3.6    37.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 422 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418A  GLY      3.1    12.9    +      -       -      +
    419A  LEU*     3.2    14.6    -      -       +      +
    421A  GLU*     1.3    75.5    -      -       -      +
    423A  LEU*     1.3    66.2    +      -       -      +
    425A  GLU*     3.1    14.4    +      -       -      +
    426A  ARG*     3.0    27.1    +      -       +      +
    474A  LEU*     3.9    22.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 423 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398A  PHE*     4.2    13.9    -      -       +      -
    411A  PHE*     4.8     2.2    -      -       +      -
    413A  LEU*     4.1    24.5    -      -       +      +
    419A  LEU      3.1    10.0    +      -       -      +
    420A  ASN*     3.2    11.4    +      -       -      +
    422A  ALA*     1.3    73.6    -      -       -      +
    424A  LEU*     1.3    58.9    +      -       -      +
    426A  ARG*     3.0     5.6    +      -       +      -
    427A  ILE*     2.9    44.2    +      -       +      +
    446A  LEU*     4.2    15.0    -      -       +      -
    467A  ILE*     4.1    10.1    -      -       +      +
    470A  LEU*     4.0    15.9    -      -       +      +
    471A  ALA*     3.7    36.1    -      -       +      +
    474A  LEU*     3.7    14.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 424 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420A  ASN      3.1    11.9    +      -       -      +
    421A  GLU      3.6     9.6    -      -       -      +
    423A  LEU*     1.3    77.9    -      -       -      +
    425A  GLU*     1.3    62.4    +      -       +      +
    427A  ILE*     3.1    10.4    +      -       +      +
    428A  ASN*     3.1    43.6    +      -       -      +
    435A  LEU*     4.0    27.6    -      -       +      +
    436A  VAL      5.0     0.2    -      -       -      -
    437A  PRO*     3.3    44.2    -      -       +      -
    444A  PHE*     3.5    12.6    -      -       +      -
    446A  LEU*     4.4    16.0    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 425 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    421A  GLU*     3.0    34.2    +      -       +      +
    422A  ALA*     3.1    11.8    +      -       -      +
    424A  LEU*     1.3    77.6    -      -       +      +
    426A  ARG*     1.3    60.3    +      -       +      +
    428A  ASN*     3.5     5.6    +      -       -      +
    429A  SER*     2.8    36.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 426 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    422A  ALA*     3.0    15.9    +      -       +      +
    423A  LEU*     3.5     9.0    -      -       -      +
    425A  GLU*     1.3    77.3    -      -       +      +
    427A  ILE*     1.3    63.8    +      -       -      +
    429A  SER*     3.7     5.5    +      -       -      -
    430A  ALA*     3.3    23.0    +      -       -      +
    470A  LEU*     3.7    25.6    -      -       +      +
    473A  GLU*     4.1    17.9    +      -       -      +
    474A  LEU*     3.6    54.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 427 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    423A  LEU*     2.9    39.4    +      -       +      +
    424A  LEU*     3.1     8.9    +      -       +      +
    426A  ARG*     1.3    77.9    -      -       -      +
    428A  ASN*     1.3    66.1    +      -       -      +
    430A  ALA*     3.3    15.6    +      -       -      +
    431A  ARG      3.6     4.7    +      -       -      -
    432A  LYS      4.6     0.3    +      -       -      -
    433A  ILE*     3.6    39.1    -      -       +      +
    435A  LEU*     4.1    18.6    -      -       +      -
    446A  LEU*     4.0    18.2    -      -       +      -
    466A  HIS*     4.4     6.5    -      -       +      -
    467A  ILE*     4.0    19.1    -      -       +      -
    470A  LEU*     3.6    18.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 428 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  TYR*     6.2     1.6    -      -       +      -
    424A  LEU*     3.1    39.7    +      -       -      +
    425A  GLU*     4.1     4.4    -      -       -      +
    427A  ILE*     1.3    74.2    -      -       -      +
    429A  SER*     1.3    67.7    +      -       -      +
    431A  ARG*     2.8    41.3    +      -       -      +
    433A  ILE      4.5     4.4    -      -       -      +
    434A  HIS*     3.5    28.3    +      -       -      -
    435A  LEU      3.5    17.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 429 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    425A  GLU*     2.8    24.3    +      -       -      +
    426A  ARG*     4.1     5.8    -      -       -      -
    427A  ILE      3.3     0.2    -      -       -      -
    428A  ASN*     1.3    77.5    -      -       -      +
    430A  ALA*     1.3    61.3    +      -       -      +
    431A  ARG*     3.3    16.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 430 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    426A  ARG      3.3    17.6    +      -       -      +
    427A  ILE      3.5     7.4    -      -       -      +
    428A  ASN      3.1     0.4    -      -       -      -
    429A  SER*     1.3    78.6    -      -       -      +
    431A  ARG*     1.3    68.1    +      -       -      +
    432A  LYS*     3.3     8.1    +      -       +      +
    466A  HIS*     3.7    26.0    -      -       +      +
    470A  LEU*     4.4     7.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 431 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  GLN*     3.5    46.1    -      -       -      +
     29A  VAL*     5.1     2.5    +      -       -      -
     30A  TYR*     3.6    35.8    +      -       -      +
     31A  PRO      3.2    17.4    +      -       -      -
     32A  ASP*     2.7    31.8    +      -       -      +
    427A  ILE      3.6     2.8    +      -       -      -
    428A  ASN*     2.8    43.8    +      -       -      +
    429A  SER*     3.1    17.0    -      -       -      +
    430A  ALA*     1.3    79.5    -      -       -      +
    432A  LYS*     1.3    61.9    +      -       -      +
    433A  ILE      3.8     4.5    -      -       -      +
----------------------------------------------------------
 Back to top of page


A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il